diff --git a/Cargo.lock b/Cargo.lock
index 38a68042..ab3ae552 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -611,6 +611,7 @@ dependencies = [
  "napi-derive",
  "serde",
  "serde_json",
+ "talos_agent",
  "talos_certifier",
  "talos_certifier_adapters",
  "talos_cohort_replicator",
diff --git a/cohort_banking_initiator_js/src/banking-app.ts b/cohort_banking_initiator_js/src/banking-app.ts
index 281ce53b..1395ed35 100644
--- a/cohort_banking_initiator_js/src/banking-app.ts
+++ b/cohort_banking_initiator_js/src/banking-app.ts
@@ -95,7 +95,7 @@ export class BankingApp {
         let stateDuration = 0
         let ooinstallEnd = 0
         let ooinstallDuration = 0
-        await this.initiator.certify(
+        let result = await this.initiator.certify(
             async () => {
                 const s = Date.now()
                 const newRequest = await this.createNewRequest(tx) as any
@@ -114,6 +114,8 @@ export class BankingApp {
             }
         )
 
+        // logger.info("tx: %s - [%s]; Completed in [attempts=%s, ms=%s]", result.xid, result.decision, result.metadata.attempts, result.metadata.durationMs)
+
         return { stateDuration, stateEnd, ooinstallDuration, ooinstallEnd }
     }
 
diff --git a/cohort_sdk_client/src/index.ts b/cohort_sdk_client/src/index.ts
index c3020b7c..e3f76780 100644
--- a/cohort_sdk_client/src/index.ts
+++ b/cohort_sdk_client/src/index.ts
@@ -2,9 +2,12 @@ import { Initiator } from "./initiator"
 import { Replicator } from "./replicator"
 import {
     JsCertificationRequestPayload,
+    JsCertificationResponse,
+    JsDecision,
     JsInitiatorConfig,
     JsKafkaConfig,
     JsReplicatorConfig,
+    JsResponseMetadata,
     JsStatemapAndSnapshot,
     JsOutOfOrderInstallOutcome,
     OutOfOrderRequest,
@@ -20,10 +23,13 @@ class TalosSdkError extends Error {
 
 export {
     Initiator,
+    JsDecision,
     JsInitiatorConfig,
+    JsCertificationResponse,
     JsCertificationRequestPayload,
     JsKafkaConfig,
     JsReplicatorConfig,
+    JsResponseMetadata,
     JsStatemapAndSnapshot,
     JsOutOfOrderInstallOutcome,
     OutOfOrderRequest,
diff --git a/cohort_sdk_client/src/initiator.ts b/cohort_sdk_client/src/initiator.ts
index 683d206c..4b452d86 100644
--- a/cohort_sdk_client/src/initiator.ts
+++ b/cohort_sdk_client/src/initiator.ts
@@ -1,4 +1,4 @@
-import { InternalInitiator, JsInitiatorConfig, OutOfOrderRequest, SdkErrorKind } from "@kindredgroup/cohort_sdk_js"
+import { InternalInitiator, JsInitiatorConfig, OutOfOrderRequest, SdkErrorKind, JsCertificationResponse } from "@kindredgroup/cohort_sdk_js"
 import { isSdkError } from "./internal"
 import { TalosSdkError } from "."
 
@@ -19,7 +19,7 @@ export class Initiator {
 
     constructor(readonly impl: InternalInitiator) {}
 
-    async certify(makeNewRequestCallback: () => Promise<any>, oooCallback: (err: Error | null, value: OutOfOrderRequest) => any): Promise<void> {
+    async certify(makeNewRequestCallback: () => Promise<any>, oooCallback: (err: Error | null, value: OutOfOrderRequest) => any): Promise<JsCertificationResponse> {
         try {
             return await this.impl.certify(makeNewRequestCallback, oooCallback)
         } catch (e) {
diff --git a/packages/cohort_sdk_js/Cargo.toml b/packages/cohort_sdk_js/Cargo.toml
index 358c93ee..319371e6 100644
--- a/packages/cohort_sdk_js/Cargo.toml
+++ b/packages/cohort_sdk_js/Cargo.toml
@@ -34,6 +34,7 @@ log = { workspace = true }
 tokio = { workspace = true, features = ["full"] }
 
 cohort_sdk = { path = "../cohort_sdk" }
+talos_agent = { path = "../talos_agent" }
 talos_cohort_replicator = { path = "../talos_cohort_replicator" }
 talos_certifier = { path = "../talos_certifier" }
 talos_certifier_adapters = { path = "../talos_certifier_adapters" }
diff --git a/packages/cohort_sdk_js/scripts/postinstall.sh b/packages/cohort_sdk_js/scripts/postinstall.sh
index 8785fc12..9d82a685 100755
--- a/packages/cohort_sdk_js/scripts/postinstall.sh
+++ b/packages/cohort_sdk_js/scripts/postinstall.sh
@@ -36,9 +36,13 @@ echo "D: lenMinusOne=$lenMinusOne, lenMinusTwo=$lenMinusTwo, lenMinusThree=$lenM
 lastPathToken="${pathTokens[lenMinusFour]}/${pathTokens[lenMinusThree]}/${pathTokens[lenMinusTwo]}"/"${pathTokens[lenMinusOne]}"
 echo "D: lastPathToken=$lastPathToken"
 
-if [ "$lastPathToken" == "cohort_sdk_client/node_modules/@kindredgroup/cohort_sdk_js" ]; then
-    echo "Post install script of 'cohort_sdk_js' is designed to be executed when module is installed as transitional dependency. Currently, 'npm install' is running as part of installing 'cohort_sdk_client'. Postinstall script is skipped."
-    exit 0
+if [ "$COHORT_SDK_CLIENT_DEV_MODE" == "true" ]; then
+    echo "Post install script of 'cohort_sdk_js' is running as transitional dependency. Enforced by COHORT_SDK_CLIENT_DEV_MODE=${COHORT_SDK_CLIENT_DEV_MODE}"
+else
+    if [ "$lastPathToken" == "cohort_sdk_client/node_modules/@kindredgroup/cohort_sdk_js" ]; then
+        echo "Post install script of 'cohort_sdk_js' is designed to be executed when module is installed as transitional dependency. Currently, 'npm install' is running as part of installing 'cohort_sdk_client'. Postinstall script is skipped."
+        exit 0
+    fi
 fi
 
 echo "Post install. Current directory is: $CURRENT_DIR"
diff --git a/packages/cohort_sdk_js/src/initiator/mod.rs b/packages/cohort_sdk_js/src/initiator/mod.rs
index b3c30c51..f9806130 100644
--- a/packages/cohort_sdk_js/src/initiator/mod.rs
+++ b/packages/cohort_sdk_js/src/initiator/mod.rs
@@ -1,4 +1,4 @@
-use crate::models::{JsBackoffConfig, JsKafkaConfig};
+use crate::models::{JsBackoffConfig, JsDecision, JsKafkaConfig};
 use crate::sdk_errors::SdkErrorContainer;
 use async_trait::async_trait;
 use cohort_sdk::cohort::Cohort;
@@ -6,7 +6,7 @@ use cohort_sdk::model::callback::{
     CertificationCandidate, CertificationCandidateCallbackResponse, CertificationRequestPayload, OutOfOrderInstallOutcome, OutOfOrderInstallRequest,
     OutOfOrderInstaller,
 };
-use cohort_sdk::model::{ClientError, Config};
+use cohort_sdk::model::{CertificationResponse, ClientError, Config, ResponseMetadata};
 use napi::bindgen_prelude::FromNapiValue;
 use napi::bindgen_prelude::Promise;
 use napi::bindgen_prelude::ToNapiValue;
@@ -126,6 +126,46 @@ impl From<JsOutOfOrderInstallOutcome> for OutOfOrderInstallOutcome {
     }
 }
 
+#[napi(object)]
+pub struct JsCertificationResponse {
+    pub xid: String,
+    pub decision: JsDecision,
+    pub version: i64,
+    pub safepoint: Option<i64>,
+    pub conflict: Option<i64>,
+    pub metadata: JsResponseMetadata,
+    pub statemaps: Option<Vec<HashMap<String, Value>>>,
+}
+
+impl From<CertificationResponse> for JsCertificationResponse {
+    fn from(value: CertificationResponse) -> Self {
+        Self {
+            xid: value.xid,
+            decision: value.decision.into(),
+            version: value.version as i64,
+            safepoint: value.safepoint.map(|v| v as i64),
+            conflict: value.conflict.map(|v| v as i64),
+            metadata: value.metadata.into(),
+            statemaps: value.statemaps,
+        }
+    }
+}
+
+impl From<ResponseMetadata> for JsResponseMetadata {
+    fn from(value: ResponseMetadata) -> Self {
+        Self {
+            attempts: value.attempts,
+            duration_ms: value.duration_ms as i64,
+        }
+    }
+}
+
+#[napi(object)]
+pub struct JsResponseMetadata {
+    pub attempts: u32,
+    pub duration_ms: i64,
+}
+
 #[napi]
 pub struct InternalInitiator {
     cohort: Cohort,
@@ -144,12 +184,12 @@ impl InternalInitiator {
         &self,
         #[napi(ts_arg_type = "() => Promise<any>")] make_new_request_callback: ThreadsafeFunction<()>,
         ooo_callback: ThreadsafeFunction<OutOfOrderRequest>,
-    ) -> napi::Result<()> {
+    ) -> napi::Result<JsCertificationResponse> {
         let new_request_provider = NewRequestProvider { make_new_request_callback };
         let ooo_impl = OutOfOrderInstallerImpl { ooo_callback };
         let make_new_request = || new_request_provider.make_new_request();
-        let _res = self.cohort.certify(&make_new_request, &ooo_impl).await.map_err(map_error)?;
-        Ok(())
+        let response = self.cohort.certify(&make_new_request, &ooo_impl).await.map_err(map_error)?;
+        Ok(response.into())
     }
 }
 
diff --git a/packages/cohort_sdk_js/src/models/mod.rs b/packages/cohort_sdk_js/src/models/mod.rs
index 633201bc..4bcf5823 100644
--- a/packages/cohort_sdk_js/src/models/mod.rs
+++ b/packages/cohort_sdk_js/src/models/mod.rs
@@ -1,9 +1,11 @@
+use cohort_sdk::model::BackoffConfig;
 use std::collections::HashMap;
+use talos_agent::messaging::api::Decision;
+use talos_rdkafka_utils::kafka_config::KafkaConfig;
 
-// $coverage:ignore-start
-use cohort_sdk::model::BackoffConfig;
+use napi::bindgen_prelude::FromNapiValue;
+use napi::bindgen_prelude::ToNapiValue;
 use napi_derive::napi;
-use talos_rdkafka_utils::kafka_config::KafkaConfig;
 
 #[napi(object)]
 pub struct JsBackoffConfig {
@@ -57,3 +59,18 @@ impl From<JsKafkaConfig> for KafkaConfig {
         }
     }
 }
+
+#[napi(string_enum)]
+pub enum JsDecision {
+    Committed,
+    Aborted,
+}
+
+impl From<Decision> for JsDecision {
+    fn from(value: Decision) -> Self {
+        match value {
+            Decision::Committed => JsDecision::Committed,
+            Decision::Aborted => JsDecision::Aborted,
+        }
+    }
+}